[llvm-commits] CVS: llvm/lib/Target/X86/X86RegisterInfo.cpp X86RegisterInfo.h

[Misha Brukman]

Changes in directory llvm/lib/Target/X86:

X86RegisterInfo.cpp updated: 1.10 -> 1.11
X86RegisterInfo.h updated: 1.7 -> 1.8

---
Log message:

Added moveReg2Reg() and moveImm2Reg() to accomodate moving data around due to
PHI nodes.


---
Diffs of the changes:

Index: llvm/lib/Target/X86/X86RegisterInfo.cpp
diff -u llvm/lib/Target/X86/X86RegisterInfo.cpp:1.10 llvm/lib/Target/X86/X86RegisterInfo.cpp:1.11
--- llvm/lib/Target/X86/X86RegisterInfo.cpp:1.10	Thu Dec 12 22:24:53 2002
+++ llvm/lib/Target/X86/X86RegisterInfo.cpp	Fri Dec 13 03:54:12 2002
@@ -63,6 +63,42 @@
   return ++(MBB->insert(MBBI, MI));
 }
 
+MachineBasicBlock::iterator
+X86RegisterInfo::moveReg2Reg(MachineBasicBlock *MBB,
+                             MachineBasicBlock::iterator MBBI,
+                             unsigned DestReg, unsigned SrcReg,
+                             unsigned dataSize) const
+{
+  unsigned opcode;
+  switch (dataSize) {
+  case 1: opcode = X86::MOVrr8; break;
+  case 2: opcode = X86::MOVrr16; break;
+  case 4: opcode = X86::MOVrr32; break;
+  default: assert(0 && "Invalid data size!");
+  }
+  
+  MachineInstr *MI = BuildMI(opcode, 2).addReg(DestReg).addReg(SrcReg);
+  return ++(MBB->insert(MBBI, MI));
+}
+
+MachineBasicBlock::iterator
+X86RegisterInfo::moveImm2Reg(MachineBasicBlock *MBB,
+                             MachineBasicBlock::iterator MBBI,
+                             unsigned DestReg, unsigned Imm, unsigned dataSize)
+  const
+{
+  unsigned opcode;
+  switch (dataSize) {
+  case 1: opcode = X86::MOVir8; break;
+  case 2: opcode = X86::MOVir16; break;
+  case 4: opcode = X86::MOVir32; break;
+  default: assert(0 && "Invalid data size!");
+  }
+  
+  MachineInstr *MI = BuildMI(opcode, 2).addReg(DestReg).addReg(Imm);
+  return ++(MBB->insert(MBBI, MI));
+}
+
 
 unsigned X86RegisterInfo::getFramePointer() const {
   return X86::EBP;


Index: llvm/lib/Target/X86/X86RegisterInfo.h
diff -u llvm/lib/Target/X86/X86RegisterInfo.h:1.7 llvm/lib/Target/X86/X86RegisterInfo.h:1.8
--- llvm/lib/Target/X86/X86RegisterInfo.h:1.7	Wed Dec  4 17:57:03 2002
+++ llvm/lib/Target/X86/X86RegisterInfo.h	Fri Dec 13 03:54:12 2002
@@ -29,6 +29,16 @@
                     unsigned DestReg, unsigned SrcReg,
                     unsigned ImmOffset, unsigned dataSize) const;
 
+  MachineBasicBlock::iterator
+  moveReg2Reg(MachineBasicBlock *MBB,
+              MachineBasicBlock::iterator MBBI,
+              unsigned DestReg, unsigned SrcReg, unsigned dataSize) const;
+
+  MachineBasicBlock::iterator
+  moveImm2Reg(MachineBasicBlock *MBB,
+              MachineBasicBlock::iterator MBBI,
+              unsigned DestReg, unsigned Imm, unsigned dataSize) const;
+
   unsigned getFramePointer() const;
   unsigned getStackPointer() const;